How to upgrade Dockerfile base images

Image Builds
1

Hi guys
Please how to upgrade (pull locally is any updates) all the base images (FROM) within the Dockerfile without manually reading/parsing it and invoking docker pul manually-resolved-image.

The most close seems to use docker build --no-cache. Still it looks really to update meta for the image but the image it self is till cached

#1 [internal] load build definition from Dockerfile.webui
#1 transferring dockerfile: 166B done
#1 DONE 0.0s

#2 [internal] load metadata for ghcr.io/some/base-image:main
#2 DONE 0.0s

#3 [internal] load .dockerignore
#3 transferring context: 2B done
#3 DONE 0.0s

#4 [1/2] FROM ghcr.io/some/base-image:main
#4 CACHED

Maybe this means there were no updates to the image yet docker images says the image is 2 months ago old. I doubt it could really be that rotten.

So how to pull all the base images from the Dockerfile explicitly or while the docker build invocation.

Thank you.

2

I’ve pulled image manually and I can confirm the image was really outdated and fetched with the updated version. So how actually to force pull on the build stage.

3

Have you tried docker build --pull --no-cache ?

4

Oh looks like this is exactly what I need
Instead of CACHED it trying to resolve the image

#4 [1/2] FROM ghcr.io/some/base-imagei:main@sha256: d93273d8bd5e990f3845555a6ef410f7684583b4336f59227614378a0db8f044
#4 resolve ghcr.io/some/base-imagei:main@sha256:d93273d8bd5e990f3845555a6ef410f7684583b4336f59227614378a0db8f044 done
#4 DONE 0.1s

Yet currently as I’ve pulled the updates manually it sticks to the very same revision. So I’ll double check in a while once the image has more updates.

Thank you very much!

5

Yes. This really works :+1: